Extremely high negative electron affinity of diamond via magnesium adsorption
We report large negative electron affinity (NEA) on diamond (100) using magnesium adsorption on a previously oxygen-terminated surface. The measured NEA is up to (-2.01±0.05) eV, the largest reported negative electron affinity to date. Despite the expected close relationship between the surface chem...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
American Physical Society
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/20063 |
| _version_ | 1848750205146497024 |
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| author | O'Donnell, Kane Edmonds, M. Tadich, A. Thomsen, L. Stacey, A. Schenk, A. Pakes, C. Ley, L. |
| author_facet | O'Donnell, Kane Edmonds, M. Tadich, A. Thomsen, L. Stacey, A. Schenk, A. Pakes, C. Ley, L. |
| author_sort | O'Donnell, Kane |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We report large negative electron affinity (NEA) on diamond (100) using magnesium adsorption on a previously oxygen-terminated surface. The measured NEA is up to (-2.01±0.05) eV, the largest reported negative electron affinity to date. Despite the expected close relationship between the surface chemistry of Mg and Li species on oxygen-terminated diamond, we observe differences in the adsorption properties between the two. Most importantly, a high-temperature annealing step is not required to activate the Mg-adsorbed surface to a state of negative electron affinity. Diamond surfaces prepared by this procedure continue to possess negative electron affinity after exposure to high temperatures, air, and even immersion in water. |
| first_indexed | 2025-11-14T07:33:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-20063 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:33:08Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-200632018-03-29T09:06:32Z Extremely high negative electron affinity of diamond via magnesium adsorption O'Donnell, Kane Edmonds, M. Tadich, A. Thomsen, L. Stacey, A. Schenk, A. Pakes, C. Ley, L. We report large negative electron affinity (NEA) on diamond (100) using magnesium adsorption on a previously oxygen-terminated surface. The measured NEA is up to (-2.01±0.05) eV, the largest reported negative electron affinity to date. Despite the expected close relationship between the surface chemistry of Mg and Li species on oxygen-terminated diamond, we observe differences in the adsorption properties between the two. Most importantly, a high-temperature annealing step is not required to activate the Mg-adsorbed surface to a state of negative electron affinity. Diamond surfaces prepared by this procedure continue to possess negative electron affinity after exposure to high temperatures, air, and even immersion in water. 2015 Journal Article http://hdl.handle.net/20.500.11937/20063 10.1103/PhysRevB.92.035303 American Physical Society restricted |
| spellingShingle | O'Donnell, Kane Edmonds, M. Tadich, A. Thomsen, L. Stacey, A. Schenk, A. Pakes, C. Ley, L. Extremely high negative electron affinity of diamond via magnesium adsorption |
| title | Extremely high negative electron affinity of diamond via magnesium adsorption |
| title_full | Extremely high negative electron affinity of diamond via magnesium adsorption |
| title_fullStr | Extremely high negative electron affinity of diamond via magnesium adsorption |
| title_full_unstemmed | Extremely high negative electron affinity of diamond via magnesium adsorption |
| title_short | Extremely high negative electron affinity of diamond via magnesium adsorption |
| title_sort | extremely high negative electron affinity of diamond via magnesium adsorption |
| url | http://hdl.handle.net/20.500.11937/20063 |